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ieitent @tiene @tiene GEORGE B. MELGHER, 0E SALEM, MASSACHUSETTS,ASSIGNUB, THROUGH MESNE ASSIGNME TTS, T() JOHN KINSMAN, 0F SAME PLACE.

Letters Patent No. "73,987, dated' February 4, 1858.

IMPEOVED WNDOW-BLIND FASTENINC T0 ALL WHOM IT MAY CONCERN:

Be ih known that I, GEORGE B. MELCBEB., of Salem,.county oi' Essex,State of Massachusetts, have invented u new or improved Device forFastening Window-Blinds; and I do hereby declare that the following is a.full and exact description thereof, reference being had to theaccompanying drawings, end to the letters of reference marked thereon.

The nature of my invention consists in what I term a rotaryslide-button, which is fastened to me face or inside of the bottom railof the blind by a. screw, nail, or their equivalent. Thesaid'rotary/slide-button is constructed with a. slot in or near themiddle of it. Throughfsaidhole the screw or its equivalent passes whichfastens the button to the blind, thus allowing the button to have a.sliding and also a. rotary motion. One end of said but-ton is madeheavier than the other; that is, it has a foot or projection, used fortwo purposes, one being to keep the end with the projection always downwhen the buttpn ceases to turn, or, inother words, when its rotarymotion ceases. The other is to give the lower end of said button a.surface, which is made convex from back to front, as it hangs attachedto the blind. The button has a notch across its extreme convex end,running from right to left, or at right angles with the face, whenattached to the blind, for the purpose of catching on to a. stnd'in thewindow-stool, when the blind is in the act of being shut, and also uponahook in the house, when the blind is in the uct of being opened. Italso may have a notch in the top or smaller end of 'said button, runningfrom front to reer, for the purpose of inserting e screw or itsequivalent, through the same, into the rail of the blind, for thepurpose of fastening the button, when desired, in such e. manner that itcannot be turned or raised, thus melting the blind secure when eitheropen or shut. The lower or projecting end of seid button has s convex orinclined surface from back to front.

In shutting the blind, the convex fece of the, end of the button strikesthe stud in the window-sill in an oblique direction, causing the buttonto rise perpendicularly until the blind is fully closed, when the buttonwill drop down upon the catch or stud in the window-sill, und thussecuring the blind. In opening the blind, the button oper-.ttes the samein respect to the outer catch.

l' make my fastening of any proper materiel, and of any length, width,or thickness, according to cenvenicnce, its ferm being es is fullysetforth in the accompanying drawings, Drawing No. 1, with a slot B, notchci, convex end c e, projection g, or the same end the notch A; end scidfastening is attached to the lower rail of the blind l?, es is shown inDrawing No. 2, by a screw, c, or its equivalent.

A thin. plate may be used, of any substance, between the blind` end thebutton;

What I claim as my invention, und desire to secure by Letters Patent,isv l The aforesaid rotary slidebuttcn, as made with e. slot, B,projection g, notch d, and convex face e e, substnntielly es described.

GEQRGE B. MELCHER.

Witnesses:

A. Eminem., Bnown Loan.

